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Not an expert but checking tire sites like TireRack, 1010Tire and Roger Kraus Racing, they indicate that's too wide for our stock rims. A 285 should be on a 10.5 - 11.5 wide rim. The widest I'd ever go on stock would be 255. So instead, I'm picking up a second set of 4 - 9.0 in. wide rims. This will enable going to the widest width possible (i.e. 265) on all four corners without suspension or body mods.
 

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Discussion Starter #4
I see a lot folks are running 275's and a few out here with 285's but no one has really stated how well the 285's work on the stock rim.
 

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Don't forget: you can get your stock rims widened to 9.25" with .2 spacers for $300 per wheel, and 275's fit like a glove. I've got serveral thousand miles with that combination on the rears with zero problems. Wildwhl is still running that combo too, I believe.
 

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285s are a little wide for the 8.5inch stock rim. 275s are pushing it, but would probably work without incident. Having a stiff sidewall tire with increased pressures should alleviate the negative aspects of going wide.
Taking a look of the stock set-up, the sidewall is perfectly straight, so there is room to go wider. I'm looking to go 255front/275 rear for next year's autox, and I can't change wheel width. STis and Evos have 8inch wheels and regularly run 275s in stock class, so we should be fine with the 8.5s. We'll see...
 

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ace996 said:
Cali, what 9inch rims are those???? Me wanna wida rimma....
Sorry bro' ... I'm under a gag order from the manufacturer until development is complete. They're being very sensitive about setting and meeting expectations. On the bright-side, when complete, the hope is to offer them to forum members at a discount. Of course final decision on that will be up to them. Hang in there, the forum will be the first to know when they're ready.
 

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ace996 said:
285s are a little wide for the 8.5inch stock rim. 275s are pushing it, but would probably work without incident. Having a stiff sidewall tire with increased pressures should alleviate the negative aspects of going wide.
Taking a look of the stock set-up, the sidewall is perfectly straight, so there is room to go wider. I'm looking to go 255front/275 rear for next year's autox, and I can't change wheel width. STis and Evos have 8inch wheels and regularly run 275s in stock class, so we should be fine with the 8.5s. We'll see...
I probably won't be far behind you. Keep us abreast, or a thigh. Doesn't matter.
 

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alcast082 said:
i feel a little loosenes in turn with the 275, they fit very tight, i'mguessing the 285 would go overboard
Ditto this. I run 275 in the back on stock rims. You can feel the added slop. It's not extreme, but you can certainly notice it.

-Chris
 
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